package com.zhangmeng.tools.controller;


import com.zhangmeng.tools.utils.AlertUtils;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;

import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

/**
 * @author zhangmeng
 * @date 2023年9月18日12:10:44
 * @version 1.0
 */
public class EditPlusController {

    @FXML
    public TextField username;

    @FXML
    public TextArea code_res;

    @FXML
    public Button gen;

    @FXML
    public void initialize() {
        gen.setOnAction(event -> {

            if (username.getText().length() == 0){
                AlertUtils.alert_warning("用户名不能为空!");
                return;
            }
            code_res.setText( execute(username.getText()));
        });
    }

    public String execute(String username){
        Object result = null;
        try {
            ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
            ScriptEngine engine = scriptEngineManager.getEngineByName("JavaScript");
            String javaScript = "function Eenerate_RegCode(UserName)\n" +
                    "{\n" +
                    "    var list = [0,49345,49537,320,49921,960,640,49729,50689,1728,1920,51009,1280,50625,50305,1088,52225,3264,3456,52545,3840,53185,52865,3648,2560,51905,52097,2880,51457,2496,2176,51265,55297,6336,6528,55617,6912,56257,55937,6720,7680,57025,57217,8000,56577,7616,7296,56385,5120,54465,54657,5440,55041,6080,5760,54849,53761,4800,4992,54081,4352,53697,53377,4160,61441,12480,12672,61761,13056,62401,62081,12864,13824,63169,63361,14144,62721,13760,13440,62529,15360,64705,64897,15680,65281,16320,16000,65089,64001,15040,15232,64321,14592,63937,63617,14400,10240,59585,59777,10560,60161,11200,10880,59969,60929,11968,12160,61249,11520,60865,60545,11328,58369,9408,9600,58689,9984,59329,59009,9792,8704,58049,58241,9024,57601,8640,8320,57409,40961,24768,24960,41281,25344,41921,41601,25152,26112,42689,42881,26432,42241,26048,25728,42049,27648,44225,44417,27968,44801,28608,28288,44609,43521,27328,27520,43841,26880,43457,43137,26688,30720,47297,47489,31040,47873,31680,31360,47681,48641,32448,32640,48961,32000,48577,48257,31808,46081,29888,30080,46401,30464,47041,46721,30272,29184,45761,45953,29504,45313,29120,28800,45121,20480,37057,37249,20800,37633,21440,21120,37441,38401,22208,22400,38721,21760,38337,38017,21568,39937,23744,23936,40257,24320,40897,40577,24128,23040,39617,39809,23360,39169,22976,22656,38977,34817,18624,18816,35137,19200,35777,35457,19008,19968,36545,36737,20288,36097,19904,19584,35905,17408,33985,34177,17728,34561,18368,18048,34369,33281,17088,17280,33601,16640,33217,32897,16448];\n" +
                    "    var hexchars = ['0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'];\n" +
                    "    var RegCode = new Array(29);\n" +
                    "    var i = 0, j = 0, k = 0;\n" +
                    "    var len, temp, sum, result;\n" +
                    "    UserName = UserName.replace(/^\\s+|\\s+$/g, \"\");\n" +
                    "    for(i = 0;i < 5;i++,k++)\n" +
                    "    {\n" +
                    "        for(j = 0;j < 5;j++,k++)\n" +
                    "        {\n" +
                    "            RegCode[k] = hexchars[parseInt(Math.random() * 16)];\n" +
                    "        }\n" +
                    "        if(k == 29) break;\n" +
                    "        RegCode[k] = '-';\n" +
                    "    }\n" +
                    "    len = UserName.length;\n" +
                    "    sum = 1;\n" +
                    "    for(i = 0;i < len;i++)\n" +
                    "        sum += UserName.charCodeAt(i);\n" +
                    "    temp = (parseInt( (sum + 23) / 6 ) + 3) * 7 % 16;\n" +
                    "    RegCode[6] = hexchars[temp & 0xF];\n" +
                    "    sum = 1;\n" +
                    "    for(i = 0;i < len;i++)\n" +
                    "        sum += UserName.charCodeAt(i);\n" +
                    "    temp = parseInt( (3 * sum + 39) / 8 ) % 16;\n" +
                    "    RegCode[9] = hexchars[temp & 0xF];\n" +
                    "    sum = 1;\n" +
                    "    for(i = 0;i < len;i++)\n" +
                    "        sum += UserName.charCodeAt(i);\n" +
                    "    temp = parseInt( (3 * sum + 19) / 9 ) % 16;\n" +
                    "    RegCode[7] = hexchars[temp & 0xF];\n" +
                    "    sum = 1;\n" +
                    "    for(i = 0;i < len;i++)\n" +
                    "        sum += UserName.charCodeAt(i);\n" +
                    "    temp = parseInt( (sum + 10) / 3 ) * 8 % 16;\n" +
                    "    RegCode[10] = hexchars[temp & 0xF];\n" +
                    "    sum = 1;\n" +
                    "    for(i = 0;i < len;i++)\n" +
                    "        sum += UserName.charCodeAt(i);\n" +
                    "    temp = (parseInt( (9 * sum + 10) / 3 ) + 36) % 16;\n" +
                    "    RegCode[4] = hexchars[temp & 0xF];\n" +
                    "    sum = 1;\n" +
                    "    for(i = 0;i < len;i++)\n" +
                    "        sum += UserName.charCodeAt(i);\n" +
                    "    temp =  parseInt( (5 * sum + 11) / 5 ) % 16;\n" +
                    "    RegCode[8] = hexchars[temp & 0xF];\n" +
                    "    result = 0;\n" +
                    "    for(i = 0;i < len;i++)\n" +
                    "        result = ((result >> 8) & 0xFF) ^ list[UserName.charCodeAt(i) ^ (result & 0xFF)];\n" +
                    "    result = result.toString(16).toUpperCase();\n" +
                    "    RegCode[2] = result.charAt(0);\n" +
                    "    RegCode[3] = result.charAt(1);\n" +
                    "    len = RegCode.length;\n" +
                    "    result = 0;\n" +
                    "    for(i = 2;i < len;i++)\n" +
                    "        result = ((result >> 8) & 0xFF) ^ list[RegCode[i].toString().charCodeAt(0) ^ (result & 0xFF)];\n" +
                    "    result = result.toString(16).toUpperCase();\n" +
                    "    RegCode[0] = result.charAt(0);\n" +
                    "    RegCode[1] = result.charAt(1);\n" +
                    "    return  RegCode.join('');\n" +
                    "}";

            engine.eval(javaScript);
            // 调用JavaScript中的方法
            Invocable env = (Invocable) engine;
            // 返回的结果
            result = env.invokeFunction("Eenerate_RegCode", username);
        } catch (ScriptException | NoSuchMethodException e) {
            e.printStackTrace();
        }
        assert result != null;
        return result.toString();
    }
}

